private async Task <HtmlString> RenderSectionAsyncCore(string sectionName, bool required)
{
if (_renderedSections.Contains(sectionName))
{
throw new InvalidOperationException($"Section {sectionName} is already rendered");
}
if (PreviousSectionWriters.TryGetValue(sectionName, out var renderDelegate))
{
_renderedSections.Add(sectionName);
await renderDelegate();
// Return a token value that allows the Write call that wraps the RenderSection \ RenderSectionAsync
// to succeed.
return(HtmlString.Empty);
}
else if (required)
{
throw new InvalidOperationException($"Section {sectionName} is not defined");
}
else
{
// If the section is optional and not found, then don't do anything.
return(null);
}
}
private async Task <HtmlString> RenderSectionAsyncCore(string sectionName, bool required)
{
if (renderedSections.Contains(sectionName))
{
log.Warning("Section {section} already rendered", sectionName);
}
if (PreviousSectionWriters.TryGetValue(sectionName, out var renderDelegate))
{
renderedSections.Add(sectionName);
await renderDelegate();
// Return a token value that allows the Write call that wraps the RenderSection \ RenderSectionAsync
// to succeed.
return(HtmlString.Empty);
}
if (required)
{
// If the section is not found, and it is not optional, throw an error.
throw new InvalidOperationException("Resources.FormatSectionNotDefined(viewContext.ExecutingFilePath, sectionName, ViewContext.View.Path)");
}
// If the section is optional and not found, then don't do anything.
return(null);
}
private async Task <HtmlString> RenderSectionAsyncCore(string sectionName, bool required)
{
if (_renderedSections.Contains(sectionName))
{
var message = Resources.FormatSectionAlreadyRendered(nameof(RenderSectionAsync), Path, sectionName);
throw new InvalidOperationException(message);
}
RenderAsyncDelegate renderDelegate;
if (PreviousSectionWriters.TryGetValue(sectionName, out renderDelegate))
{
_renderedSections.Add(sectionName);
await renderDelegate(Output);
// Return a token value that allows the Write call that wraps the RenderSection \ RenderSectionAsync
// to succeed.
return(HtmlString.Empty);
}
else if (required)
{
// If the section is not found, and it is not optional, throw an error.
var message = Resources.FormatSectionNotDefined(
ViewContext.ExecutingFilePath,
sectionName,
ViewContext.View.Path);
throw new InvalidOperationException(message);
}
else
{
// If the section is optional and not found, then don't do anything.
return(null);
}
}
public HelperResult RenderSection([NotNull] string name, bool required)
{
EnsureMethodCanBeInvoked("RenderSection");
if (_renderedSections.Contains(name))
{
throw new InvalidOperationException(Resources.FormatSectionAlreadyRendered("RenderSection", name));
}
HelperResult action;
if (PreviousSectionWriters.TryGetValue(name, out action))
{
_renderedSections.Add(name);
return(action);
}
else if (required)
{
// If the section is not found, and it is not optional, throw an error.
throw new InvalidOperationException(Resources.FormatSectionNotDefined(name));
}
else
{
// If the section is optional and not found, then don't do anything.
return(null);
}
}
private async Task <HtmlString> RenderSectionAsyncCore(string sectionName, bool required)
{
if (_renderedSections.Contains(sectionName))
{
var message = "bleh";
throw new InvalidOperationException(message);
}
RenderAsyncDelegate renderDelegate;
if (PreviousSectionWriters.TryGetValue(sectionName, out renderDelegate))
{
_renderedSections.Add(sectionName);
await renderDelegate(Output);
// Return a token value that allows the Write call that wraps the RenderSection \ RenderSectionAsync
// to succeed.
return(HtmlString.Empty);
}
else if (required)
{
// If the section is not found, and it is not optional, throw an error.
var message = "bleh";
throw new InvalidOperationException(message);
}
else
{
// If the section is optional and not found, then don't do anything.
return(null);
}
}
private async Task <HtmlString> RenderSectionAsyncCore(string sectionName, bool required)
{
if (_renderedSections.Contains(sectionName))
{
var message = Resources.FormatSectionAlreadyRendered(sectionName);
throw new InvalidOperationException(message);
}
RenderAsyncDelegate renderDelegate;
if (PreviousSectionWriters.TryGetValue(sectionName, out renderDelegate))
{
_renderedSections.Add(sectionName);
using (var writer = new StringCollectionTextWriter(Output.Encoding))
{
await renderDelegate(writer);
// Returning a disposed StringCollectionTextWriter is safe.
return(new HtmlString(writer));
}
}
else if (required)
{
// If the section is not found, and it is not optional, throw an error.
throw new InvalidOperationException(Resources.FormatSectionNotDefined(sectionName));
}
else
{
// If the section is optional and not found, then don't do anything.
return(null);
}
}